Mozilla Firefox

The first challenger to Internet Explorer's dominace of the late '90s and early 2000s, Mozilla's Firefox is a very typography friendly browser with good OpenType support.

Firefox overview

Global Market share: 19.2% (May 2013)Font formats: Firefox supports TrueType fonts (.ttf) as well as OpenType fonts with TrueType (.ttf) or PostScript (.otf) outlines. (Since 3.6 also WOFF)Notes: Same-origin rule: By default, Firefox will only accept relative links. If you want to use absolute links or include fonts from different domains, you need to send these fonts with Access Control Headers.